US20140003072A1 - Vehicular rear panel - Google Patents
Vehicular rear panel Download PDFInfo
- Publication number
- US20140003072A1 US20140003072A1 US13/927,384 US201313927384A US2014003072A1 US 20140003072 A1 US20140003072 A1 US 20140003072A1 US 201313927384 A US201313927384 A US 201313927384A US 2014003072 A1 US2014003072 A1 US 2014003072A1
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- US
- United States
- Prior art keywords
- light source
- rear panel
- light
- vehicular
- vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/2661—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic mounted on parts having other functions
- B60Q1/268—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic mounted on parts having other functions on windscreens or windows
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J1/00—Windows; Windscreens; Accessories therefor
- B60J1/18—Windows; Windscreens; Accessories therefor arranged at the vehicle rear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J5/00—Doors
- B60J5/10—Doors arranged at the vehicle rear
- B60J5/101—Doors arranged at the vehicle rear for non-load transporting vehicles, i.e. family cars including vans
- B60J5/107—Doors arranged at the vehicle rear for non-load transporting vehicles, i.e. family cars including vans constructional details, e.g. about door frame, panels, materials used, reinforcements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/0088—Details of electrical connections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/005—Manufacturers' emblems, name plates, bonnet ornaments, mascots or the like; Mounting means therefor
Definitions
- the present disclosure relates to a vehicular rear panel, especially a vehicular rear panel which is mounted on a vehicle such as, e.g. a car.
- Japanese Patent Laid-Open Publication No. H5-69777 discloses a high-mount stop lamp which is attached to a rear wind shield of a vehicle, i.e., an inner upper part of the rear window and used as a stop lamp.
- a vehicular rear panel has been sought for the purpose of such as, for example, weight lightening of vehicles.
- the present inventors have repeatedly conducted a careful research regarding a vehicular rear panel formed of a resin material and, as a result, have obtained a vehicular rear panel with a new configuration which is provided with a function of a vehicular lamp such as, for example, a stop lamp.
- the present disclosure has been made based on the present inventors' such recognition and an aspect of the present disclosure is to provide a vehicular rear panel with a new configuration.
- a vehicular rear panel which is made of a resin material and disposed at a rear vehicle body portion.
- the vehicular rear panel includes a light source which is at least partially disposed in the inside of the vehicular rear panel, a circuit which is at least partially provided in the vehicular rear panel to supply electric power to the light source, and a light emitting unit configured to emit light from the light source to the rear side of the vehicle.
- a vehicular rear panel with a new configuration may be provided.
- the vehicular rear panel may be provided with a rear window part and the rear window part may be provided with the above-described light source, circuit, and light emitting unit.
- the rear window part has a curved portion which causes the scenery to be discontinuous when viewed from a driver side and the above-described light source, circuit, and light emitting unit may be provided at the curved portion.
- the vehicular rear panel may be provided with a light shielding part configured to suppress the light from the light source from proceeding toward the front of the vehicle.
- one end of the light guiding unit may be disposed in the vicinity of the light source installed on the vehicle body and the other end may be disposed in the vicinity of the light emitting unit.
- a vehicular rear panel with a new configuration may also be provided.
- a vehicular rear panel with a new configuration may be provided.
- FIG. 1A is a schematic front view illustrating a configuration of a vehicular rear panel according to a first exemplary embodiment.
- FIG. 1B is a cross-sectional view taken along line A-A in FIG. 1A .
- FIG. 2A is a schematic perspective view illustrating a configuration of a light source and an FPC of a vehicular rear panel according to a modified example 1.
- FIG. 2B is a schematic cross-sectional view illustrating a configuration in the vicinity of a luminous part of the vehicular rear panel according to a modified example 2.
- FIG. 3A is a schematic front view illustrating a configuration of a vehicular rear panel according to a modified example 3.
- FIG. 3B is a schematic view describing the attachment of a light source module to a rear window part.
- FIG. 4A is a schematic front view illustrating a configuration of a vehicular rear panel according to a modified example 4.
- FIG. 4B is a cross-sectional view taken along line B-B in FIG. 4A .
- FIG. 5A is a schematic front view illustrating a configuration of a vehicular rear panel according to a modified example 5.
- FIG. 5B is a cross-sectional view taken along line C-C in FIG. 5A .
- FIG. 6A is a schematic front view illustrating a configuration of a vehicular rear panel according to a second exemplary embodiment.
- FIG. 6B is a cross-sectional view taken along line D-D in FIG. 6A .
- FIG. 6C is a rear view illustrating a vehicular rear panel in a state in which a masking material is provided.
- FIG. 7A is a schematic side view illustrating a configuration of the rear part of the vehicle on which a vehicular rear panel according to a third exemplary embodiment is mounted.
- FIG. 7B is a schematic vertical cross-sectional view illustrating a configuration in the vicinity of a curved portion of a rear window part.
- FIG. 7C is a schematic front view illustrating a configuration of a vehicular rear panel according to a third exemplary embodiment.
- FIG. 8A is a schematic front view illustrating a configuration of a vehicular rear panel according to a fourth exemplary embodiment.
- FIG. 8B is a cross-sectional view taken along line E-E in FIG. 8A .
- FIG. 9A is a schematic front view illustrating a configuration of a vehicular rear panel according to a fifth exemplary embodiment.
- FIG. 9B is a schematic perspective view illustrating a configuration of a light source implementation film.
- FIG. 9C is a cross-sectional view taken along line F-F in FIG. 9A .
- FIG. 10A is a cross-sectional view describing a manufacturing method of a rear window part.
- FIG. 10B is a cross-sectional view describing a manufacturing method of a rear window part of a vehicular rear panel according to a modified example 6 .
- FIG. 1A is a schematic front view illustrating a configuration of a vehicular rear panel according to the first exemplary embodiment.
- FIG. 1A illustrates a state in which a vehicle 1 equipped with a vehicular rear panel 100 is viewed from the rear side.
- FIG. 1B is a cross-sectional view taken along line A-A in FIG. 1A .
- the vehicular rear panel 100 according to the present exemplary embodiment is disposed on a rear vehicle body part 2 of the vehicle 1 and made of a resin material.
- the vehicular rear panel 100 is made of a material such as, e.g., polycarbonate resin or acrylic resin.
- the vehicular rear panel 100 of the present disclosure forms a retractable backdoor and shields an opening 4 of the rear vehicle body part 2 .
- the vehicular rear panel 100 is provided with a backdoor outer panel 102 and a rear window part 104 . That is, the vehicular rear panel 100 is configured by the backdoor panel 102 and the rear window part 104 .
- the backdoor panel 102 is a frame having an opening and the opening is provided with the rear window part 104 .
- the rear window part 104 of the present exemplary embodiment is formed with a transparent resin material such as, e.g., polycarbonate resin or acrylic resin.
- the rear window part 104 is a region which may be used for a driver's rear visibility. Also, in the vehicular rear panel 100 , the backdoor panel 102 and the rear window part 104 may be integrally formed.
- the vehicular rear panel 100 integrally formed with the backdoor outer panel 102 and the rear window part 104 may be obtained. Further, the whole vehicular rear panel 100 may be transparent. In this case, the whole vehicular rear panel 100 forms the rear window part 104 .
- the vehicular rear panel 100 is provided with a light source 106 which is at least partially disposed in the inside of the vehicular rear panel 100 , a light emitting unit 108 configured to emit light source light to the rear of the vehicle, and a flexible printed circuit (hereinafter, referred to as “FPC 110 ”) 110 which is at least partially provided in the vehicular rear panel 100 to supply electric power to the light source 106 as a wiring.
- a light-emitting element such as, e.g., LED (“light-emitting diode”), LD (“laser diode”), organic or inorganic EL (“electro luminescence”) may be used.
- the light source 106 , the FPC 110 , and the light emitting unit 108 are provided to the rear window part 104 . More specifically, a concave portion 104 a is formed on a predetermined region of the surface of the front side of the vehicle (vehicle interior side or vehicle compartment side) of the rear window part 104 , i.e. at the region of each of left and right ends of the rear window part 104 .
- the concave portion 104 a accommodates a light source module in which a plurality of light sources 106 are mounted on a transparent FPC 110 of a sheet shape.
- a transparent resin film 112 is bonded to the surface of the front side of the vehicle of the rear window part 104 such that it covers the concave portion 104 a . Accordingly, a plurality of light sources 106 and the FPC 110 are sealed in the concave portion 104 a .
- the region of the rear window part 104 where the light source 106 overlaps or the concave portion 104 a overlaps when viewed from the rear side of the vehicle forms the light emitting unit 108 .
- the extending region of the light emitting unit 108 forms a luminous part.
- Each light source 106 is electrically connected to the FPC 110 .
- the FPC 110 is electrically connected to an electronic circuit (not illustrated) installed in the vehicle body side or vehicular rear panel 100 .
- ON/OFF of the light source 106 is controlled by the electronic circuit while the light source 106 is in a sealed state in the concave portion 104 a .
- the light source 106 is disposed such that the light emitting surface thereof faces the rear side of the vehicle.
- the light emitted from the light source 106 is emitted to the surface of the rear side of the vehicle (vehicle exterior side) of the light emitting unit 108 and radiated to the rear side of the vehicle.
- the light source 106 emits red light.
- the light source 106 , the FPC 110 , and the light emitting unit 108 serve as a stop lamp and/or a tail lamp as a vehicular beacon lamp.
- the light source 106 may emit amber light and the light source, FPC 110 , and the light emitting unit 108 may serve as a turn signal lamp.
- the light source 106 , FPC 110 , and the light emitting unit 108 may be disposed at the upper central part and serve as a high mount stop lamp.
- the number and the arrangement of light sources 106 are not limited to those illustrate in the drawing and may configure various lamps.
- the resin film 112 , the FPC 110 , and the light emitting unit 108 are transparent.
- the vehicular rear panel 100 has a so-called see-through configuration which enables a driver to visually recognize the rear side of the vehicle through the extending region of the resin film 112 , the FPC 110 , and the light emitting unit 108 .
- the vehicular rear panel 100 of the present exemplary embodiment is provided with a light source 106 which is at least partly disposed in the inside of the vehicular rear panel 100 , an FPC 110 which is at least partly provided in the vehicular rear panel 100 and configured to supply electrical power to the light source 106 as a wiring, and a light emitting unit 108 configured to emit the light source light to the rear of the vehicle. That is, the vehicular rear panel 100 of the present exemplary embodiment has a configuration in which a vehicular lamp is integrally provided. Accordingly, the vehicular rear panel 100 with a new configuration may be provided.
- the number of components, the number of assembling steps and the manufacturing cost of the vehicular rear panel or the vehicle may be reduced since configurations and members required to attach the vehicular lamp to the backdoor or the vehicle body may be omitted.
- the rear window part 104 is made of a resin material.
- weight lightening of the vehicular rear panel 100 may be further facilitated.
- the backdoor outer panel 102 and the rear window part 104 may be integrally formed, the number of components, the number of assembling steps, and the manufacturing cost of the vehicular rear panel may be further reduced.
- the rear window part 104 may be simply formed with a concave portion 104 a configured to accommodate the light source since the concave portion 104 a may be easily processed on the rear window part 104 .
- the light source 106 , the FPC 110 and the light emitting unit 108 are provided in the rear window part 104 .
- the design flexibility of the vehicular lamp or the design flexibility of the vehicle may be increased and the decorativenss of the vehicular rear panel 100 may be enhanced.
- it may look as if the luminous part is floating in the air since the surroundings of the light emitting unit 108 are transparent.
- modified examples 1 to 5 described below may be exemplified.
- FIG. 2A is a schematic perspective view illustrating a configuration of a light source and an FPC of the vehicular rear panel according to the modified example 1.
- the vehicular rear panel 100 according to the modified example 1 is provided with a light shielding part 114 on the rear side of the FPC 110 where a plurality of light sources 106 are mounted.
- the light shielding part 114 is configured to suppress light from the light source from proceeding to the front side of the vehicle.
- the light shielding part 114 is constituted by, for example, a liquid crystal shutter.
- a film-shaped liquid crystal shutter is stacked on the surface which is opposite to the surface where the light sources 106 of the FPC 110 are mounted.
- the liquid crystal shutter is turned ON in a state where the light sources 106 are in the ON state so that the penetration amount of the light decreases.
- the radiation of red light to the front side of the vehicle may cause, for example, a pedestrian or a driver of another vehicle to misunderstand the front-rear direction of the vehicle in a configuration in which red light is radiated from the light emitting unit 108 , it is preferable that substantially all the light is shielded to an extent that the right is not visible to, for example, a pedestrian.
- the liquid crystal shutter is turned OFF in a state of light off of the light source and the penetration amount of the light increases. For example, the liquid crystal shutter becomes transparent when the light source 106 is in the OFF state.
- the radiation of the light to the front side of the vehicle may be suppressed when the light sources 106 , the FPC 110 , and the light emitting unit 108 serve as a beacon lamp.
- the light source 106 s , the FPC 110 , and the light emitting unit 108 are not serving as a beacon lamp, a see-through configuration in which the rear side of the vehicle is visible to the driver may be obtained.
- the light shielding part 114 formed with the film-shaped liquid crystal shutter may be disposed between the FPC 110 and the resin film 112 or in the front side of the vehicle.
- the light shielding part 114 may be disposed to be spaced from the resin film 112 as long as the light shielding part may exhibit the light shielding effect.
- the light shielding part 114 may be a metal layer formed by depositing for example, aluminum or silver to the surface of the FPC 110 , a resin layer formed from a colored resin material or a paint film formed by applying a colored paint.
- the metal layer may be served as a reflector to radiate the light from the light source to the rear side of the vehicle.
- FIG. 2B is a schematic cross-sectional view illustrating a configuration in the vicinity of the luminous part of the vehicular rear panel according to the modified example 2.
- an FPC 110 mounted with light sources 106 is accommodated in the concave portion 104 a formed on the rear window part 104 .
- a sealing layer 116 formed from a transparent sealing material is provided in the concave portion 104 a .
- the sealing layer 116 may be formed, for example, by insert molding using a sealing material which may be used for injection molding.
- the light sources 106 and the FPC 110 are sealed in the rear window part 104 by the sealing layer 116 instead of the resin film 112 . Since the sealing layer 116 is transparent, a see-through configuration in the extending region of the light emitting unit 108 may also be implemented by the present modified example.
- FIG. 3A is a schematic front view illustrating a configuration of the vehicular rear panel according to the modified example 3.
- FIG. 3B is a schematic view describing the attachment of a light source module to a rear window part.
- FIG. 3A illustrates a half of the vehicular rear panel 100 in the widthwise direction of the vehicle. A portion omitted in the illustration has a shape which is axisymmetric to the illustrated portion. Further, FIG.3A illustrates a state in which the rear window part 104 is viewed from the front side of the vehicle.
- the vehicular rear panel 100 according to the modified example 3 is provided with a light source module, in which a plurality of light sources 106 are mounted on a support 118 , in the concave portion 104 a provided on the surface of the front side of the vehicle of the rear window part 104 .
- the light source module has a configuration in which the light sources 106 are mounted on the support (a rigid substrate) 118 formed by forming a wiring 117 for power supply on a colored or transparent and rigid base material by electric conductor printing.
- the light source module may have a configuration in which the light sources 106 are mounted on the support 118 formed by a colored or transparent FPC as a wiring.
- the light source module may be an injection molded product (a molding injection device (MID)).
- the deterioration of a driver's rear visibility caused when the support 118 is opaque may be reduced since the support 118 has a line shape.
- the shape of the support 118 is not limited to a substantially U-shape as illustrated in FIG. 3A and may have another shape such as, e.g., a circular or polygonal shape.
- FIG. 4A is a schematic front view illustrating a configuration of the vehicular rear panel according to the modified example 4.
- FIG. 4B is a cross-sectional view taken along line B-B in FIG. 4A .
- FIG. 3A illustrates a half of the vehicular rear panel 100 in the widthwise direction of the vehicle. A portion omitted in the illustration has a shape which is axisymmetric to the illustrated portion.
- each light source 106 is embedded in the rear window part 104 and electrically connected to the wiring formed on the surface of the rear window part 104 .
- the light source 106 is mounted on a substrate 122 where electrodes 120 are provided on the rear surface thereof
- a plurality of concave portions 104 a are formed which respectively correspond to a plurality of light sources 106 on the surface of the front side of the vehicle of the rear window part 104 .
- Each concave portion 104 a accommodates one light source 106 and a filler material 124 is filled between the wall of the concave portion 104 a and the light source 106 .
- positional alignment of the light source 106 may be made with and the wall of the concave portion 104 a and the substrate 122 .
- a metal deposition processing is executed at a predetermined region of the surface of the front side of the vehicle of the rear window part 104 . Accordingly, a wiring 128 electrically connected to a circuit substrate 126 provided on the backdoor panel 102 and the electrodes 120 of each light source 106 and configured to supply electric power to the light source 106 are formed. According to the modified example, the design flexibility of the arrangement of the light sources 106 may be enhanced. Also, manufacturing costs may be reduced.
- FIG. 5A is a schematic front view illustrating a configuration of the vehicular rear panel according to the modified example 5.
- FIG. 5B is a cross-sectional view taken along line C-C in FIG. 5A .
- the light source 106 is disposed at a location where a defogger (hot wire) 130 formed on the rear window part 104 overlaps in the longitudinal direction of the vehicle.
- the defogger 130 may be formed by depositing a metal such as, e.g., aluminum or silver on the surface of front side of the vehicle of the rear window part 104 .
- the defogger 130 is provided with wide part 130 sa on the rear surface of the light sources 106 .
- each of the wide parts 130 a When viewed in the longitudinal direction of the vehicle, each of the wide parts 130 a has a larger area than that of a corresponding one the light sources 106 so that the light sources 106 are disposed within the wide parts 130 a , respectively.
- the wide parts 130 a By disposing the wide parts 130 a on the surfaces of the front side of the vehicle of the light sources 106 , the radiation of the light from the light sources 106 to the front side of the vehicle may be suppressed. That is, the wide parts 130 a serve as a light shielding part.
- the wide parts 130 a the light radiated from the light sources 106 toward the front side of the vehicle or the light reflected from the surface of the rear side of the vehicle of the light emitting unit 108 to the front side of the vehicle may be reflected to the rear side of the vehicle.
- the light directed toward the front side of the vehicle from the surfaces of the rear side of the vehicle of the light sources 106 and the light emitting unit 108 reaches the wide parts 103 a through the transparent FPC 110 .
- the light directed to the rear side of the vehicle from the wide parts 130 a reaches the surface of the rear side of the vehicle of the light emitting unit 108 through the transparent FPC 110 .
- step-shaped concave portions 104 b are provided on the surfaces of the front side of the vehicle of the rear window part 104 and the wide parts 130 a are accommodated in the concave portions 104 b , respectively.
- the light distribution of the light source light may be controlled by the wide parts 130 a .
- the wide parts 130 a may not be embedded in the rear window part 104 and may have, for example, a curved shape.
- the vehicular rear panel according to the second exemplary embodiment has a configuration in which a light source is connected to a hot wire of a defogger.
- a light source is connected to a hot wire of a defogger.
- FIG. 6A is a schematic front view illustrating a configuration of the vehicular rear panel according to the second exemplary embodiment.
- FIG. 6B is a cross-sectional view taken along line D-D in FIG. 6A .
- FIG. 6C is a rear view illustrating the vehicular rear panel in a state in which a masking material configured to cover the light source and the defogger is provided.
- FIG. 6C illustrates a state in which the vehicular rear panel is viewed from the front side of the vehicle.
- the vehicular rear panel 100 has a configuration in which a circuit pattern of light sources 106 is formed on the rear window part 104 which is made of a resin material and a light source module and the rear window part 104 are integrally formed.
- the defogger 130 is used for the circuit pattern. More specifically, the light sources 106 are accommodated in concave portions 104 a formed on the rear window part 104 , respectively. Further, the defogger 130 is connected to the electrodes of the light sources 106 . The electrodes of adjacent light sources 106 are electrically connected by hot wires of the defogger 130 . That is, the hot wires forming the defogger 130 and the light sources 106 are disposed alternately.
- the end portions of the hot wires are connected to an electronic circuit 132 .
- the hot wires of the defogger 130 serve as a wiring configured to supply electric power to the light sources 106 .
- the hot wires of the defogger 130 serve as a resistance in an ON/OFF control circuit of the light sources 106 .
- a colored, for example, black masking material 134 may be provided on the rear surface (of the front side of the vehicle) of the light source 106 and the defogger 130 .
- the masking material 134 is formed of an insulating resin material.
- the light sources 106 and the defogger 130 are coated with the masking material 134 , thereby suppressing the light source light from proceeding to the front side of the vehicle while protecting the light sources 106 and the defogger 130 .
- the electronic circuit 132 is provided in the rear window part 104 , it may be provided in another region of such as, e.g., vehicle body side.
- a light source, a wiring, and a light emitting unit are provided at a curved portion of the rear window part.
- descriptions about the vehicular rear panel according to the present exemplary embodiment will be made based on the features different from those of the first exemplary embodiment. Also, the same configurations as those of the first exemplary embodiment will be assigned with the same symbols and the descriptions and illustrations of the configurations and the effects will be omitted.
- FIG. 7A is a schematic side view illustrating the rear part of the vehicle on which the vehicular rear panel according to the third exemplary embodiment is mounted.
- FIG. 7B is a schematic vertical cross-sectional view illustrating the rear window part in the vicinity of the curved portion.
- FIG. 7C is a schematic front view illustrating a configuration of the vehicular rear panel according to the third exemplary embodiment.
- the vehicular rear panel 100 according to the third exemplary embodiment is provided with the rear window part 104 which is formed with a first rear window part 104 d and a second rear window part 104 e .
- the first rear window part 104 d inclines at a predetermined angle such that the height of the vehicle is gradually lowered from the front side of the vehicle toward the rear side of the vehicle in the rear vehicle body part 2 .
- the second rear window part 104 e extends from the end portion of the rear side of the vehicle of the first rear window part 104 d with steeper inclination than that of the first rear window part 104 d .
- the second rear window part 104 e extends in the downward vertical direction from the end portion of the rear side of the vehicle of the first rear window part 104 d .
- the second rear window part 104 e may extend to the rear of the vehicle with steeper inclination than that of the first rear window part 104 d and may be folded toward the front side of the vehicle.
- a connecting part of the first rear window part 104 d and the second window part 104 e forms a curved portion 104 f .
- the curved portion 104 f is a region where scenery becomes discontinuous when viewed from a driver side.
- the light source 106 , the wiring 128 , and the light emitting unit 108 are provided at the curved portion 104 f .
- the curved portion 104 f extends in the widthwise direction of the vehicle and the light sources 106 and the wiring 128 for electric power supply to the light sources 106 are arranged in the widthwise direction of the vehicle.
- a light shielding part 136 is provided in the front side of the vehicle of the light source 106 .
- the vehicular rear panel 100 uses the curved part 104 f , which is difficult to use for a driver's visibility of the rear side of the vehicle, for the region where the light sources 106 , the wiring 128 and the light emitting unit 108 are provided. Accordingly, the deterioration of the driver's rear visibility caused by providing the light sources 106 , the wiring 128 , and the light emitting unit 108 on the rear window part 104 may be suppressed.
- the vehicular rear panel according to the fourth exemplary embodiment is integrally formed with an information display member having a shape such as, for example, a letter or a figure on the rear window part.
- an information display member having a shape such as, for example, a letter or a figure on the rear window part.
- descriptions about the vehicular rear panel according to the present exemplary embodiment will be made based on the features different from those of the first exemplary embodiment. Also, the same configurations as those of the first exemplary embodiment will be assigned with the same symbols and the descriptions and illustrations of the configurations and the effects will be omitted.
- FIG. 8A is a schematic front view illustrating a configuration of the vehicular rear panel according to the fourth exemplary embodiment.
- FIG. 8B is a cross-sectional view taken along line E-E in FIG. 8A .
- the vehicular rear panel 100 according to the fourth exemplary embodiment is provided with an information display member 138 which has a shape such as, for example, a letter or a figure and is made of a colored or transparent resin material on the surface of the front side of the vehicle of the rear window part 104 .
- the information display member 138 may has a shape such as, e.g., a maker logo or an emblem.
- a light source 106 and an FPC 110 as a wiring are embedded in the rear window part 104 .
- the light source 106 is disposed so as to emit the light toward the information display member 138 . Accordingly, when the light source 106 is turned ON, the shape of the information display member 138 may be caused to float on the rear window part 104 . Further, if the information display member 138 is made of a colored resin material, the information display member 138 may be visible in the rear side of the vehicle even when the light source 106 is turned OFF.
- the vehicular rear panel according to the fifth exemplary embodiment has a configuration in which, for example, the light source, the wiring for electric power supply, the defogger are embedded to the rear window part.
- the vehicular rear panel according to the present exemplary embodiment will be made based on the fact which is different from the first exemplary embodiment. Also, the same configurations as those of the first exemplary embodiment will be assigned with the same symbols and the descriptions and illustrations of the configurations and the effects will be omitted.
- FIG. 9A is a schematic front view illustrating a configuration of the vehicular rear panel according to the fifth exemplary embodiment.
- FIG. 9B is a schematic perspective view illustrating a configuration of a light source implementation film.
- FIG. 9C is a cross-sectional view taken along line F-F in FIG. 9A .
- FIG. 10A is a cross-sectional view to describe a manufacturing method of a rear window part.
- a plurality of light sources 106 , a wiring 128 for electric power supply, a defogger 130 , and an electric power supply unit 140 to which the wiring 128 and the defogger 130 are connected are embedded in the rear window part 104 which is made of a resin material.
- the rear window part 104 has a configuration in which a light source implementation film 142 , a rear window inner panel 144 , a rear window outer panel 146 , a first sealing material 148 , and a second sealing material 150 are stacked.
- the plurality of light sources 106 are disposed such that all or some of them form a letter or a figure. Accordingly, corresponding letter or figure may be caused to float on the rear window part 104 .
- the light source implementation film 142 includes a transparent resin film 152 , the wiring 128 provided on one surface of the transparent resin film 152 , the defogger 130 , the electric power supply unit 140 , the light sources 106 , and the light shielding part 114 provided on the other surface of the transparent resin film 152 .
- the wiring 128 , the defogger 130 , and the electric power supply unit 140 are formed by printing on the surface of the transparent resin film 152 using a conductive material. After the printing of the wiring 128 , the light sources 106 are mounted.
- the light shielding part 114 is formed by printing using colored paint such as, e.g., black paint or blue paint. Also, the wiring 128 may form a portion of the defogger 130 .
- the thickness of the light source mounting film 142 is, for example, about 0.2 mm to about 0.5 mm.
- the rear window inner panel 144 and the rear window outer panel 146 may be manufactured using an acrylic material such as, e.g., polycarbonate resin or polymethyl metacrylate (PMMA) by injection molding.
- the rear window inner panel 144 and the rear window outer panel 146 are transparent members and have a curved shape according to the shape of the rear window part 104 .
- the thickness of the rear window inner panel 144 is about 1 mm to about 3 mm and the thickness of the rear window outer panel 146 is about 2 mm to about 5 mm.
- the thickness of the rear window outer panel 146 may be set to be larger than that of the rear window inner panel. Accordingly, the light source 106 may be more securely protected from the external impact.
- the first sealing material 148 and the second sealing material 150 are transparent sheet-shaped members formed from, for example, ethylene vinyl acetate copolymer (“EVA”). They become softened at 110° C. or more and serve as an adhesive.
- the thickness of each of the first sealing material 148 and the second sealing material 150 are, for example, 0.45 mm.
- the first sealing material 148 and/or the second sealing material 150 may be mixed with an infrared ray cut material or ultraviolet ray cut material (for example, a pigment).
- the second sealing material 150 may be mixed with the infrared rays cut material to protect the light sources 106 from infrared rays radiated from the outside.
- the rear window part 104 may be manufactured by a laminate method which is well-known in the related art. That is, a laminate is obtained by laminating the rear window inner panel 144 , the first sealing material 148 , the light source implementation film 142 , the second sealing material 150 , and the rear window outer panel 146 in this order on a heating plate 154 having a convex curved surface according to the curved shape of the rear window inner panel 144 and the rear window outer panel 146 . Also, the heating plate 154 and the entire laminated are covered with about a 10 mm-thick diaphragm rubber (not illustrated) and the air in the space between the diaphragm and the heating plate 154 is exhausted to form a vacuum state. The heat plate is set to and retained at about 135° C. for about 10 minutes to heat and compress the laminate. By the steps as described above, the rear window part 104 integrally formed with the light source implementation film 142 may be obtained.
- a see-through configuration may also be implemented by the present exemplary embodiment.
- a modified example 6 below may be exemplified.
- FIG. 10B is a cross-sectional view to describe a manufacturing method of the rear window part of the vehicular rear panel according to the modified example 6.
- an uneven portion 156 having a shape, such as, e.g. a letter or a figure are integrally formed on the surface where the rear window outer panel 146 and the second sealing material 150 come in contact with each other.
- the uneven portion 156 may be provided on the location where it overlaps the arrangement of the light source 106 mounted on the transparent resin film 152 or where it does not overlap the arrangement of the corresponding light source 106 .
- the uneven portion 156 may be provided on the rear window inner panel 144 .
- the present disclosure is not limited to each of the above-described exemplary embodiments and modified examples.
- Each exemplary embodiment and each modified example may be combined and changes such as, e.g., various design changes may be made thereto based on the knowledge of a person skilled in the art.
- Such combinations or embodiments or modified examples where the changes are made are also included in the scope of the present disclosure.
- New exemplary embodiments obtained by combining the above-described respective exemplary embodiments or the respective modified examples and new exemplary embodiments obtained by combining the above-described respective exemplary embodiments or modified examples and the changes described below have respective effects of the combined exemplary embodiments, the modified examples and the changes in combination.
- the light source 106 and the light emitting unit 108 may be provided in a region where the backdoor panel 102 is included, other than the rear window part 104 .
- a configuration in which the panel made of a resin material is provided with the light source and the light emitting unit and further a configuration in which the window part made of a resin material is provided with the light source and the light emitting unit may be applied not only to the vehicular rear panel but also, for example, to a vehicular side panel, a roof panel, or a front panel.
- transparent in each of the above-described exemplary embodiments and the modified examples refers to “having light transmittance (light permeability)” and includes colored transparence other than colorless transparence.
Abstract
A vehicular rear panel having a new configuration is provided. The vehicular rear panel according to an aspect of the present disclosure is made of a resin material and disposed on the rear vehicle body part. The vehicular rear panel includes: a light source which is at least partially disposed in the inside of the vehicular rear panel, a circuit which is at least partially provided in the vehicular rear panel to supply electric power to the light source, and a light emitting unit configured to emit light source light to the rear of the vehicle.
Description
- This application is based on and claims priority from Japanese Patent Application No. 2012-147036 filed on Jun. 29, 2012 with the Japan Patent Office and the disclosure of which is incorporated herein in its entirety by reference.
- The present disclosure relates to a vehicular rear panel, especially a vehicular rear panel which is mounted on a vehicle such as, e.g. a car.
- Japanese Patent Laid-Open Publication No. H5-69777 discloses a high-mount stop lamp which is attached to a rear wind shield of a vehicle, i.e., an inner upper part of the rear window and used as a stop lamp.
- Recently, the resinification of a vehicular rear panel has been sought for the purpose of such as, for example, weight lightening of vehicles. In such a circumstance, the present inventors have repeatedly conducted a careful research regarding a vehicular rear panel formed of a resin material and, as a result, have obtained a vehicular rear panel with a new configuration which is provided with a function of a vehicular lamp such as, for example, a stop lamp.
- The present disclosure has been made based on the present inventors' such recognition and an aspect of the present disclosure is to provide a vehicular rear panel with a new configuration.
- According to an aspect of the present disclosure, there is provided a vehicular rear panel which is made of a resin material and disposed at a rear vehicle body portion. The vehicular rear panel includes a light source which is at least partially disposed in the inside of the vehicular rear panel, a circuit which is at least partially provided in the vehicular rear panel to supply electric power to the light source, and a light emitting unit configured to emit light from the light source to the rear side of the vehicle.
- According to the above-described aspect, a vehicular rear panel with a new configuration may be provided.
- In another aspect, the vehicular rear panel may be provided with a rear window part and the rear window part may be provided with the above-described light source, circuit, and light emitting unit. Also, in the present aspect, the rear window part has a curved portion which causes the scenery to be discontinuous when viewed from a driver side and the above-described light source, circuit, and light emitting unit may be provided at the curved portion. Further, in any of the above-described aspects, the vehicular rear panel may be provided with a light shielding part configured to suppress the light from the light source from proceeding toward the front of the vehicle. Furthermore, in any of the above-described aspects, one end of the light guiding unit may be disposed in the vicinity of the light source installed on the vehicle body and the other end may be disposed in the vicinity of the light emitting unit. With above-described aspects, a vehicular rear panel with a new configuration may also be provided.
- According to the present disclosure, a vehicular rear panel with a new configuration may be provided.
- The above-described summary is for illustration purposes only and does not intend to limit in any ways. In addition to the illustrative embodiments, examples, and features described above, additional embodiments, examples, and features will become apparent by referring to the drawings and the following detailed description.
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FIG. 1A is a schematic front view illustrating a configuration of a vehicular rear panel according to a first exemplary embodiment.FIG. 1B is a cross-sectional view taken along line A-A inFIG. 1A . -
FIG. 2A is a schematic perspective view illustrating a configuration of a light source and an FPC of a vehicular rear panel according to a modified example 1. -
FIG. 2B is a schematic cross-sectional view illustrating a configuration in the vicinity of a luminous part of the vehicular rear panel according to a modified example 2. -
FIG. 3A is a schematic front view illustrating a configuration of a vehicular rear panel according to a modified example 3.FIG. 3B is a schematic view describing the attachment of a light source module to a rear window part. -
FIG. 4A is a schematic front view illustrating a configuration of a vehicular rear panel according to a modified example 4.FIG. 4B is a cross-sectional view taken along line B-B inFIG. 4A . -
FIG. 5A is a schematic front view illustrating a configuration of a vehicular rear panel according to a modified example 5.FIG. 5B is a cross-sectional view taken along line C-C inFIG. 5A . -
FIG. 6A is a schematic front view illustrating a configuration of a vehicular rear panel according to a second exemplary embodiment.FIG. 6B is a cross-sectional view taken along line D-D inFIG. 6A .FIG. 6C is a rear view illustrating a vehicular rear panel in a state in which a masking material is provided. -
FIG. 7A is a schematic side view illustrating a configuration of the rear part of the vehicle on which a vehicular rear panel according to a third exemplary embodiment is mounted.FIG. 7B is a schematic vertical cross-sectional view illustrating a configuration in the vicinity of a curved portion of a rear window part.FIG. 7C is a schematic front view illustrating a configuration of a vehicular rear panel according to a third exemplary embodiment. -
FIG. 8A is a schematic front view illustrating a configuration of a vehicular rear panel according to a fourth exemplary embodiment.FIG. 8B is a cross-sectional view taken along line E-E inFIG. 8A . -
FIG. 9A is a schematic front view illustrating a configuration of a vehicular rear panel according to a fifth exemplary embodiment.FIG. 9B is a schematic perspective view illustrating a configuration of a light source implementation film.FIG. 9C is a cross-sectional view taken along line F-F inFIG. 9A . -
FIG. 10A is a cross-sectional view describing a manufacturing method of a rear window part.FIG. 10B is a cross-sectional view describing a manufacturing method of a rear window part of a vehicular rear panel according to a modified example 6. - In the following detailed descriptions, reference will be made to the accompanying drawings which form a part of the present application. The illustrative embodiments described in the detailed descriptions, drawings, and the claims do not intend to limit. Other embodiments may be used and other modified examples may be made without departing from the spirit or scope of the subject matter represented in the present application.
- Hereinafter, detailed descriptions of the present disclosure will be made with reference to the drawings based on the condign exemplary embodiments. The same or equivalent components, members, and processings that are represented in each of the drawings are assigned with the same symbols and repeated descriptions thereof will be properly omitted. Also, the exemplary embodiments exemplify the present disclosure rather than limiting the present disclosure and it shall not be concluded that all the features or the combinations described in the exemplary embodiments are necessarily essential to the present disclosure.
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FIG. 1A is a schematic front view illustrating a configuration of a vehicular rear panel according to the first exemplary embodiment.FIG. 1A illustrates a state in which avehicle 1 equipped with a vehicularrear panel 100 is viewed from the rear side.FIG. 1B is a cross-sectional view taken along line A-A inFIG. 1A . The vehicularrear panel 100 according to the present exemplary embodiment is disposed on a rearvehicle body part 2 of thevehicle 1 and made of a resin material. The vehicularrear panel 100 is made of a material such as, e.g., polycarbonate resin or acrylic resin. The vehicularrear panel 100 of the present disclosure forms a retractable backdoor and shields an opening 4 of the rearvehicle body part 2. - The vehicular
rear panel 100 is provided with a backdoorouter panel 102 and arear window part 104. That is, the vehicularrear panel 100 is configured by thebackdoor panel 102 and therear window part 104. Thebackdoor panel 102 is a frame having an opening and the opening is provided with therear window part 104. Therear window part 104 of the present exemplary embodiment is formed with a transparent resin material such as, e.g., polycarbonate resin or acrylic resin. Therear window part 104 is a region which may be used for a driver's rear visibility. Also, in the vehicularrear panel 100, thebackdoor panel 102 and therear window part 104 may be integrally formed. In this case, for example, by forming a transparent resin material into a sheet of plate and conducting a coloring on a region which is to be abackdoor panel 102, the vehicularrear panel 100 integrally formed with the backdoorouter panel 102 and therear window part 104 may be obtained. Further, the whole vehicularrear panel 100 may be transparent. In this case, the whole vehicularrear panel 100 forms therear window part 104. - Further, the vehicular
rear panel 100 is provided with alight source 106 which is at least partially disposed in the inside of the vehicularrear panel 100, alight emitting unit 108 configured to emit light source light to the rear of the vehicle, and a flexible printed circuit (hereinafter, referred to as “FPC 110”) 110 which is at least partially provided in the vehicularrear panel 100 to supply electric power to thelight source 106 as a wiring. For thelight source 106, for example, a light-emitting element such as, e.g., LED (“light-emitting diode”), LD (“laser diode”), organic or inorganic EL (“electro luminescence”) may be used. In the present disclosure, thelight source 106, theFPC 110, and thelight emitting unit 108 are provided to therear window part 104. More specifically, aconcave portion 104 a is formed on a predetermined region of the surface of the front side of the vehicle (vehicle interior side or vehicle compartment side) of therear window part 104, i.e. at the region of each of left and right ends of therear window part 104. Theconcave portion 104 a accommodates a light source module in which a plurality oflight sources 106 are mounted on atransparent FPC 110 of a sheet shape. Atransparent resin film 112 is bonded to the surface of the front side of the vehicle of therear window part 104 such that it covers theconcave portion 104 a. Accordingly, a plurality oflight sources 106 and theFPC 110 are sealed in theconcave portion 104 a. The region of therear window part 104 where thelight source 106 overlaps or theconcave portion 104 a overlaps when viewed from the rear side of the vehicle forms thelight emitting unit 108. When viewed from the exterior side of the vehicle, the extending region of thelight emitting unit 108 forms a luminous part. - Each
light source 106 is electrically connected to theFPC 110. Also, theFPC 110 is electrically connected to an electronic circuit (not illustrated) installed in the vehicle body side or vehicularrear panel 100. ON/OFF of thelight source 106 is controlled by the electronic circuit while thelight source 106 is in a sealed state in theconcave portion 104 a. Thelight source 106 is disposed such that the light emitting surface thereof faces the rear side of the vehicle. The light emitted from thelight source 106 is emitted to the surface of the rear side of the vehicle (vehicle exterior side) of thelight emitting unit 108 and radiated to the rear side of the vehicle. In the present exemplary embodiment, thelight source 106 emits red light. In addition, thelight source 106, theFPC 110, and thelight emitting unit 108 serve as a stop lamp and/or a tail lamp as a vehicular beacon lamp. Also, thelight source 106 may emit amber light and the light source,FPC 110, and thelight emitting unit 108 may serve as a turn signal lamp. Further, thelight source 106,FPC 110, and thelight emitting unit 108 may be disposed at the upper central part and serve as a high mount stop lamp. The number and the arrangement oflight sources 106 are not limited to those illustrate in the drawing and may configure various lamps. - The
resin film 112, theFPC 110, and thelight emitting unit 108 are transparent. Thus, the vehicularrear panel 100 has a so-called see-through configuration which enables a driver to visually recognize the rear side of the vehicle through the extending region of theresin film 112, theFPC 110, and thelight emitting unit 108. - As described above, the vehicular
rear panel 100 of the present exemplary embodiment is provided with alight source 106 which is at least partly disposed in the inside of the vehicularrear panel 100, anFPC 110 which is at least partly provided in the vehicularrear panel 100 and configured to supply electrical power to thelight source 106 as a wiring, and alight emitting unit 108 configured to emit the light source light to the rear of the vehicle. That is, the vehicularrear panel 100 of the present exemplary embodiment has a configuration in which a vehicular lamp is integrally provided. Accordingly, the vehicularrear panel 100 with a new configuration may be provided. Also, according to the vehicularrear panel 100 of the present exemplary embodiment, for example, the number of components, the number of assembling steps and the manufacturing cost of the vehicular rear panel or the vehicle may be reduced since configurations and members required to attach the vehicular lamp to the backdoor or the vehicle body may be omitted. - In addition, in the present exemplary embodiment, the
rear window part 104 is made of a resin material. Thus, weight lightening of the vehicularrear panel 100 may be further facilitated. Further, since the backdoorouter panel 102 and therear window part 104 may be integrally formed, the number of components, the number of assembling steps, and the manufacturing cost of the vehicular rear panel may be further reduced. Furthermore, therear window part 104 may be simply formed with aconcave portion 104 a configured to accommodate the light source since theconcave portion 104 a may be easily processed on therear window part 104. Also, in the present exemplary embodiment, thelight source 106, theFPC 110 and thelight emitting unit 108 are provided in therear window part 104. Accordingly, the design flexibility of the vehicular lamp or the design flexibility of the vehicle may be increased and the decorativenss of the vehicularrear panel 100 may be enhanced. In the present exemplary embodiment, it may look as if the luminous part is floating in the air since the surroundings of thelight emitting unit 108 are transparent. - As for the vehicular
rear panel 100 according to the above-described first exemplary embodiment, modified examples 1 to 5 described below may be exemplified. -
FIG. 2A is a schematic perspective view illustrating a configuration of a light source and an FPC of the vehicular rear panel according to the modified example 1. The vehicularrear panel 100 according to the modified example 1 is provided with alight shielding part 114 on the rear side of theFPC 110 where a plurality oflight sources 106 are mounted. Thelight shielding part 114 is configured to suppress light from the light source from proceeding to the front side of the vehicle. Thelight shielding part 114 is constituted by, for example, a liquid crystal shutter. In the present modified example, a film-shaped liquid crystal shutter is stacked on the surface which is opposite to the surface where thelight sources 106 of theFPC 110 are mounted. The liquid crystal shutter is turned ON in a state where thelight sources 106 are in the ON state so that the penetration amount of the light decreases. Especially, since the radiation of red light to the front side of the vehicle may cause, for example, a pedestrian or a driver of another vehicle to misunderstand the front-rear direction of the vehicle in a configuration in which red light is radiated from thelight emitting unit 108, it is preferable that substantially all the light is shielded to an extent that the right is not visible to, for example, a pedestrian. Also, the liquid crystal shutter is turned OFF in a state of light off of the light source and the penetration amount of the light increases. For example, the liquid crystal shutter becomes transparent when thelight source 106 is in the OFF state. - Accordingly, the radiation of the light to the front side of the vehicle may be suppressed when the
light sources 106, theFPC 110, and thelight emitting unit 108 serve as a beacon lamp. Also, when the light source 106 s, theFPC 110, and thelight emitting unit 108 are not serving as a beacon lamp, a see-through configuration in which the rear side of the vehicle is visible to the driver may be obtained. Further, thelight shielding part 114 formed with the film-shaped liquid crystal shutter may be disposed between theFPC 110 and theresin film 112 or in the front side of the vehicle. In addition, thelight shielding part 114 may be disposed to be spaced from theresin film 112 as long as the light shielding part may exhibit the light shielding effect. Furthermore, thelight shielding part 114 may be a metal layer formed by depositing for example, aluminum or silver to the surface of theFPC 110, a resin layer formed from a colored resin material or a paint film formed by applying a colored paint. When thelight shielding part 114 is formed from the metal layer, the metal layer may be served as a reflector to radiate the light from the light source to the rear side of the vehicle. -
FIG. 2B is a schematic cross-sectional view illustrating a configuration in the vicinity of the luminous part of the vehicular rear panel according to the modified example 2. In the vehicularrear panel 100 according to the modified example 2, anFPC 110 mounted withlight sources 106 is accommodated in theconcave portion 104 a formed on therear window part 104. Asealing layer 116 formed from a transparent sealing material is provided in theconcave portion 104 a. Thesealing layer 116 may be formed, for example, by insert molding using a sealing material which may be used for injection molding. In the present modified example, thelight sources 106 and theFPC 110 are sealed in therear window part 104 by thesealing layer 116 instead of theresin film 112. Since thesealing layer 116 is transparent, a see-through configuration in the extending region of thelight emitting unit 108 may also be implemented by the present modified example. -
FIG. 3A is a schematic front view illustrating a configuration of the vehicular rear panel according to the modified example 3.FIG. 3B is a schematic view describing the attachment of a light source module to a rear window part. Also,FIG. 3A illustrates a half of the vehicularrear panel 100 in the widthwise direction of the vehicle. A portion omitted in the illustration has a shape which is axisymmetric to the illustrated portion. Further,FIG.3A illustrates a state in which therear window part 104 is viewed from the front side of the vehicle. - The vehicular
rear panel 100 according to the modified example 3 is provided with a light source module, in which a plurality oflight sources 106 are mounted on asupport 118, in theconcave portion 104 a provided on the surface of the front side of the vehicle of therear window part 104. The light source module has a configuration in which thelight sources 106 are mounted on the support (a rigid substrate) 118 formed by forming awiring 117 for power supply on a colored or transparent and rigid base material by electric conductor printing. Alternatively, the light source module may have a configuration in which thelight sources 106 are mounted on thesupport 118 formed by a colored or transparent FPC as a wiring. Further, the light source module may be an injection molded product (a molding injection device (MID)). According to the present modified example, the deterioration of a driver's rear visibility caused when thesupport 118 is opaque may be reduced since thesupport 118 has a line shape. Also, the shape of thesupport 118 is not limited to a substantially U-shape as illustrated inFIG. 3A and may have another shape such as, e.g., a circular or polygonal shape. -
FIG. 4A is a schematic front view illustrating a configuration of the vehicular rear panel according to the modified example 4.FIG. 4B is a cross-sectional view taken along line B-B inFIG. 4A . Also,FIG. 3A illustrates a half of the vehicularrear panel 100 in the widthwise direction of the vehicle. A portion omitted in the illustration has a shape which is axisymmetric to the illustrated portion. In the vehicularrear panel 100 according to the modified example 4, eachlight source 106 is embedded in therear window part 104 and electrically connected to the wiring formed on the surface of therear window part 104. More specifically, thelight source 106 is mounted on asubstrate 122 whereelectrodes 120 are provided on the rear surface thereof A plurality ofconcave portions 104 a are formed which respectively correspond to a plurality oflight sources 106 on the surface of the front side of the vehicle of therear window part 104. Eachconcave portion 104 a accommodates onelight source 106 and afiller material 124 is filled between the wall of theconcave portion 104 a and thelight source 106. At that time, positional alignment of thelight source 106 may be made with and the wall of theconcave portion 104 a and thesubstrate 122. - While the
light source 106 is accommodated in theconcave portion 104 a, for example, a metal deposition processing is executed at a predetermined region of the surface of the front side of the vehicle of therear window part 104. Accordingly, awiring 128 electrically connected to acircuit substrate 126 provided on thebackdoor panel 102 and theelectrodes 120 of eachlight source 106 and configured to supply electric power to thelight source 106 are formed. According to the modified example, the design flexibility of the arrangement of thelight sources 106 may be enhanced. Also, manufacturing costs may be reduced. -
FIG. 5A is a schematic front view illustrating a configuration of the vehicular rear panel according to the modified example 5.FIG. 5B is a cross-sectional view taken along line C-C inFIG. 5A . As for the vehicularrear panel 100 according to the modified example 5, thelight source 106 is disposed at a location where a defogger (hot wire) 130 formed on therear window part 104 overlaps in the longitudinal direction of the vehicle. Thedefogger 130 may be formed by depositing a metal such as, e.g., aluminum or silver on the surface of front side of the vehicle of therear window part 104. Thedefogger 130 is provided withwide part 130 sa on the rear surface of thelight sources 106. When viewed in the longitudinal direction of the vehicle, each of thewide parts 130 a has a larger area than that of a corresponding one thelight sources 106 so that thelight sources 106 are disposed within thewide parts 130 a, respectively. By disposing thewide parts 130 a on the surfaces of the front side of the vehicle of thelight sources 106, the radiation of the light from thelight sources 106 to the front side of the vehicle may be suppressed. That is, thewide parts 130 a serve as a light shielding part. - Also, by the
wide parts 130 a, the light radiated from thelight sources 106 toward the front side of the vehicle or the light reflected from the surface of the rear side of the vehicle of thelight emitting unit 108 to the front side of the vehicle may be reflected to the rear side of the vehicle. The light directed toward the front side of the vehicle from the surfaces of the rear side of the vehicle of thelight sources 106 and thelight emitting unit 108 reaches the wide parts 103 a through thetransparent FPC 110. Also, the light directed to the rear side of the vehicle from thewide parts 130 a reaches the surface of the rear side of the vehicle of thelight emitting unit 108 through thetransparent FPC 110. In the present modified example, step-shapedconcave portions 104 b are provided on the surfaces of the front side of the vehicle of therear window part 104 and thewide parts 130 a are accommodated in theconcave portions 104 b, respectively. Thus, the light distribution of the light source light may be controlled by thewide parts 130 a. Also, thewide parts 130 a may not be embedded in therear window part 104 and may have, for example, a curved shape. - The vehicular rear panel according to the second exemplary embodiment has a configuration in which a light source is connected to a hot wire of a defogger. Hereafter, descriptions about the vehicular rear panel according to the present exemplary embodiment will be made based on the features different from those of the first exemplary embodiment. Also, the same configurations as those of the first exemplary embodiment will be assigned with the same symbols and the descriptions and illustrations of the configurations and the effects will be omitted.
FIG. 6A is a schematic front view illustrating a configuration of the vehicular rear panel according to the second exemplary embodiment.FIG. 6B is a cross-sectional view taken along line D-D inFIG. 6A .FIG. 6C is a rear view illustrating the vehicular rear panel in a state in which a masking material configured to cover the light source and the defogger is provided.FIG. 6C illustrates a state in which the vehicular rear panel is viewed from the front side of the vehicle. - The vehicular
rear panel 100 according to the second exemplary embodiment has a configuration in which a circuit pattern oflight sources 106 is formed on therear window part 104 which is made of a resin material and a light source module and therear window part 104 are integrally formed. Also, in the present exemplary embodiment, thedefogger 130 is used for the circuit pattern. More specifically, thelight sources 106 are accommodated inconcave portions 104 a formed on therear window part 104, respectively. Further, thedefogger 130 is connected to the electrodes of thelight sources 106. The electrodes of adjacentlight sources 106 are electrically connected by hot wires of thedefogger 130. That is, the hot wires forming thedefogger 130 and thelight sources 106 are disposed alternately. Furthermore, the end portions of the hot wires are connected to anelectronic circuit 132. In the vehicularrear panel 100 of the present exemplary embodiment, the hot wires of thedefogger 130 serve as a wiring configured to supply electric power to thelight sources 106. Also, the hot wires of thedefogger 130 serve as a resistance in an ON/OFF control circuit of thelight sources 106. By using thedefogger 130 as the circuit pattern of thelight sources 106 as described above, the number of components, the number of assembling processes, and the manufacturing cost of the vehicular rear panel may be reduced. - A colored, for example,
black masking material 134 may be provided on the rear surface (of the front side of the vehicle) of thelight source 106 and thedefogger 130. The maskingmaterial 134 is formed of an insulating resin material. Thelight sources 106 and thedefogger 130 are coated with the maskingmaterial 134, thereby suppressing the light source light from proceeding to the front side of the vehicle while protecting thelight sources 106 and thedefogger 130. Also, in the present exemplary embodiment, although theelectronic circuit 132 is provided in therear window part 104, it may be provided in another region of such as, e.g., vehicle body side. - In the vehicular rear panel according to the third exemplary embodiment, a light source, a wiring, and a light emitting unit are provided at a curved portion of the rear window part. Hereafter, descriptions about the vehicular rear panel according to the present exemplary embodiment will be made based on the features different from those of the first exemplary embodiment. Also, the same configurations as those of the first exemplary embodiment will be assigned with the same symbols and the descriptions and illustrations of the configurations and the effects will be omitted.
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FIG. 7A is a schematic side view illustrating the rear part of the vehicle on which the vehicular rear panel according to the third exemplary embodiment is mounted.FIG. 7B is a schematic vertical cross-sectional view illustrating the rear window part in the vicinity of the curved portion.FIG. 7C is a schematic front view illustrating a configuration of the vehicular rear panel according to the third exemplary embodiment. The vehicularrear panel 100 according to the third exemplary embodiment is provided with therear window part 104 which is formed with a firstrear window part 104 d and a secondrear window part 104 e. The firstrear window part 104 d inclines at a predetermined angle such that the height of the vehicle is gradually lowered from the front side of the vehicle toward the rear side of the vehicle in the rearvehicle body part 2. The secondrear window part 104 e extends from the end portion of the rear side of the vehicle of the firstrear window part 104 d with steeper inclination than that of the firstrear window part 104 d. In the present exemplary embodiment, the secondrear window part 104 e extends in the downward vertical direction from the end portion of the rear side of the vehicle of the firstrear window part 104 d. Also, the secondrear window part 104 e may extend to the rear of the vehicle with steeper inclination than that of the firstrear window part 104 d and may be folded toward the front side of the vehicle. A connecting part of the firstrear window part 104 d and thesecond window part 104 e forms acurved portion 104 f. Thecurved portion 104 f is a region where scenery becomes discontinuous when viewed from a driver side. - The
light source 106, thewiring 128, and thelight emitting unit 108 are provided at thecurved portion 104 f. In the present exemplary embodiment, thecurved portion 104 f extends in the widthwise direction of the vehicle and thelight sources 106 and thewiring 128 for electric power supply to thelight sources 106 are arranged in the widthwise direction of the vehicle. A light shielding part 136 is provided in the front side of the vehicle of thelight source 106. The vehicularrear panel 100 according to the present exemplary embodiment uses thecurved part 104 f, which is difficult to use for a driver's visibility of the rear side of the vehicle, for the region where thelight sources 106, thewiring 128 and thelight emitting unit 108 are provided. Accordingly, the deterioration of the driver's rear visibility caused by providing thelight sources 106, thewiring 128, and thelight emitting unit 108 on therear window part 104 may be suppressed. - The vehicular rear panel according to the fourth exemplary embodiment is integrally formed with an information display member having a shape such as, for example, a letter or a figure on the rear window part. Hereafter, descriptions about the vehicular rear panel according to the present exemplary embodiment will be made based on the features different from those of the first exemplary embodiment. Also, the same configurations as those of the first exemplary embodiment will be assigned with the same symbols and the descriptions and illustrations of the configurations and the effects will be omitted.
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FIG. 8A is a schematic front view illustrating a configuration of the vehicular rear panel according to the fourth exemplary embodiment.FIG. 8B is a cross-sectional view taken along line E-E inFIG. 8A . The vehicularrear panel 100 according to the fourth exemplary embodiment is provided with aninformation display member 138 which has a shape such as, for example, a letter or a figure and is made of a colored or transparent resin material on the surface of the front side of the vehicle of therear window part 104. Theinformation display member 138 may has a shape such as, e.g., a maker logo or an emblem. - Also, a
light source 106 and anFPC 110 as a wiring are embedded in therear window part 104. Thelight source 106 is disposed so as to emit the light toward theinformation display member 138. Accordingly, when thelight source 106 is turned ON, the shape of theinformation display member 138 may be caused to float on therear window part 104. Further, if theinformation display member 138 is made of a colored resin material, theinformation display member 138 may be visible in the rear side of the vehicle even when thelight source 106 is turned OFF. - The vehicular rear panel according to the fifth exemplary embodiment has a configuration in which, for example, the light source, the wiring for electric power supply, the defogger are embedded to the rear window part. Hereafter, descriptions about the vehicular rear panel according to the present exemplary embodiment will be made based on the fact which is different from the first exemplary embodiment. Also, the same configurations as those of the first exemplary embodiment will be assigned with the same symbols and the descriptions and illustrations of the configurations and the effects will be omitted.
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FIG. 9A is a schematic front view illustrating a configuration of the vehicular rear panel according to the fifth exemplary embodiment.FIG. 9B is a schematic perspective view illustrating a configuration of a light source implementation film.FIG. 9C is a cross-sectional view taken along line F-F inFIG. 9A .FIG. 10A is a cross-sectional view to describe a manufacturing method of a rear window part. In the vehicularrear panel 100 according to the fifth exemplary embodiment, a plurality oflight sources 106, awiring 128 for electric power supply, adefogger 130, and an electricpower supply unit 140 to which thewiring 128 and thedefogger 130 are connected are embedded in therear window part 104 which is made of a resin material. More specifically, therear window part 104 has a configuration in which a lightsource implementation film 142, a rear windowinner panel 144, a rear windowouter panel 146, afirst sealing material 148, and asecond sealing material 150 are stacked. The plurality oflight sources 106 are disposed such that all or some of them form a letter or a figure. Accordingly, corresponding letter or figure may be caused to float on therear window part 104. - The light
source implementation film 142 includes atransparent resin film 152, thewiring 128 provided on one surface of thetransparent resin film 152, thedefogger 130, the electricpower supply unit 140, thelight sources 106, and thelight shielding part 114 provided on the other surface of thetransparent resin film 152. Thewiring 128, thedefogger 130, and the electricpower supply unit 140 are formed by printing on the surface of thetransparent resin film 152 using a conductive material. After the printing of thewiring 128, thelight sources 106 are mounted. Thelight shielding part 114 is formed by printing using colored paint such as, e.g., black paint or blue paint. Also, thewiring 128 may form a portion of thedefogger 130. The thickness of the lightsource mounting film 142 is, for example, about 0.2 mm to about 0.5 mm. - The rear window
inner panel 144 and the rear windowouter panel 146 may be manufactured using an acrylic material such as, e.g., polycarbonate resin or polymethyl metacrylate (PMMA) by injection molding. The rear windowinner panel 144 and the rear windowouter panel 146 are transparent members and have a curved shape according to the shape of therear window part 104. The thickness of the rear windowinner panel 144 is about 1 mm to about 3 mm and the thickness of the rear windowouter panel 146 is about 2 mm to about 5 mm. The thickness of the rear windowouter panel 146 may be set to be larger than that of the rear window inner panel. Accordingly, thelight source 106 may be more securely protected from the external impact. - The
first sealing material 148 and thesecond sealing material 150 are transparent sheet-shaped members formed from, for example, ethylene vinyl acetate copolymer (“EVA”). They become softened at 110° C. or more and serve as an adhesive. The thickness of each of thefirst sealing material 148 and thesecond sealing material 150 are, for example, 0.45 mm. Thefirst sealing material 148 and/or thesecond sealing material 150 may be mixed with an infrared ray cut material or ultraviolet ray cut material (for example, a pigment). Especially, as for thesecond sealing material 150 stacked on the surface of the vehicle exterior side the lightsource implementation film 142, thesecond sealing material 150 may be mixed with the infrared rays cut material to protect thelight sources 106 from infrared rays radiated from the outside. - The
rear window part 104 may be manufactured by a laminate method which is well-known in the related art. That is, a laminate is obtained by laminating the rear windowinner panel 144, thefirst sealing material 148, the lightsource implementation film 142, thesecond sealing material 150, and the rear windowouter panel 146 in this order on aheating plate 154 having a convex curved surface according to the curved shape of the rear windowinner panel 144 and the rear windowouter panel 146. Also, theheating plate 154 and the entire laminated are covered with about a 10 mm-thick diaphragm rubber (not illustrated) and the air in the space between the diaphragm and theheating plate 154 is exhausted to form a vacuum state. The heat plate is set to and retained at about 135° C. for about 10 minutes to heat and compress the laminate. By the steps as described above, therear window part 104 integrally formed with the lightsource implementation film 142 may be obtained. - Since the
transparent film 152, the rear windowinner panel 144, the rear windowouter panel 146, thefirst sealing material 148, and thesecond sealing material 150 are transparent, a see-through configuration may also be implemented by the present exemplary embodiment. - As for the vehicular
rear panel 100 according to the fifth exemplary embodiment, a modified example 6 below may be exemplified. -
FIG. 10B is a cross-sectional view to describe a manufacturing method of the rear window part of the vehicular rear panel according to the modified example 6. In the vehicularrear panel 100 according to the modified example 6, anuneven portion 156 having a shape, such as, e.g. a letter or a figure are integrally formed on the surface where the rear windowouter panel 146 and thesecond sealing material 150 come in contact with each other. By providing theuneven portion 156 on the rear windowouter panel 146, therear window part 104 provided with undulation of a letter and a figure. Also, theuneven portion 156 may be provided on the location where it overlaps the arrangement of thelight source 106 mounted on thetransparent resin film 152 or where it does not overlap the arrangement of the correspondinglight source 106. Further, theuneven portion 156 may be provided on the rear windowinner panel 144. - The present disclosure is not limited to each of the above-described exemplary embodiments and modified examples. Each exemplary embodiment and each modified example may be combined and changes such as, e.g., various design changes may be made thereto based on the knowledge of a person skilled in the art. Such combinations or embodiments or modified examples where the changes are made are also included in the scope of the present disclosure. New exemplary embodiments obtained by combining the above-described respective exemplary embodiments or the respective modified examples and new exemplary embodiments obtained by combining the above-described respective exemplary embodiments or modified examples and the changes described below have respective effects of the combined exemplary embodiments, the modified examples and the changes in combination.
- In the each of the above-described exemplary embodiments and modified examples, the
light source 106 and thelight emitting unit 108 may be provided in a region where thebackdoor panel 102 is included, other than therear window part 104. Also, a configuration in which the panel made of a resin material is provided with the light source and the light emitting unit and further a configuration in which the window part made of a resin material is provided with the light source and the light emitting unit may be applied not only to the vehicular rear panel but also, for example, to a vehicular side panel, a roof panel, or a front panel. The term, “transparent” in each of the above-described exemplary embodiments and the modified examples refers to “having light transmittance (light permeability)” and includes colored transparence other than colorless transparence. - From the foregoing, it will be appreciated that various embodiments of the present disclosure have been described herein for purposes of illustration, and that various modifications may be made without departing from the scope and spirit of the present disclosure. Accordingly, the various embodiments disclosed herein are not intended to be limiting, with the true scope and spirit being indicated by the following claims.
Claims (6)
1. A vehicular rear panel comprising:
a light source which is at least partially disposed in the vehicular rear panel,
a wiring which is at least partially provided in the vehicular rear panel to supply electric power to the light source, and
a light emitting unit configured to emit light source light to the rear side of a vehicle,
wherein the rear panel is disposed on a rear vehicle body part and made of a resin material.
2. The vehicular rear panel of claim 1 , further comprising a rear window part, wherein the light source, the circuit, and the light emitting unit are provided on the rear window part.
3. The vehicular rear panel of claim 2 , wherein the rear window part has a curved portion where scenery becomes discontinuous when viewed from a driver side and the light source, the circuit, and the light emitting unit are provided at the curved portion.
4. The vehicular rear panel of claim 1 , further comprising a light shielding part configured to suppress the light source light from proceeding toward the front of the vehicle.
5. The vehicular rear panel of claim 2 , further comprising a light shielding part configured to suppress the light source light from proceeding toward the front of the vehicle.
6. The vehicular rear panel of claim 3 , further comprising a light shielding part configured to suppress the light source light from proceeding toward the front of the vehicle.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012147036A JP5961053B2 (en) | 2012-06-29 | 2012-06-29 | Vehicle rear panel |
JP2012-147036 | 2012-06-29 |
Publications (1)
Publication Number | Publication Date |
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US20140003072A1 true US20140003072A1 (en) | 2014-01-02 |
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ID=49777956
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/927,384 Abandoned US20140003072A1 (en) | 2012-06-29 | 2013-06-26 | Vehicular rear panel |
Country Status (2)
Country | Link |
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US (1) | US20140003072A1 (en) |
JP (1) | JP5961053B2 (en) |
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